AUT. 19 PLANT AND INSECT FOSSILS — COCKEKELL 7 



ALSINITES REVELATUS. new species 



Plate 1, fig. 2 



Calyx about 5 mm. long and 2.5 mm. broad; stamens exserted 

 about 3.5 mm., with rather stout filaments; anthers oval hardly half 

 a mm. long; capsules 'about 2 mm. in diameter. 



Green Eiver shales; spur above Roan Creek opposite Salt Wash, 

 just beyond the spur on which is the Ute trail. Found, 1922, by 

 John P. Byram. 



H olotype. —C^t. No. 36858, U.S.N.M. 



This is the first fossil caryophylloid plant from North Americ'a. 

 with the possible exception of Carjwllthus caryo2)hylloides Knowl- 

 ton, also of the Green River Eocene of Colorado, which has the base 

 of the calyx (?) much broader and more abruptly separated from 

 the pedicel. This comparison is based on the supposition that it is 

 a c'alyx, but Knowlton prefers to consider it a capsule more or less 

 resembling that of Lychnis^ in which case the resemblance to Alsin- 

 ites is even more remote. 



Plants of this type exist in rocky and mountainous places, even in 

 the tropics, but not in the humid lowlands. Presumably Alsmites 

 grew on some mountain overlooking Green River lake and was 

 washed down to the bottom of the valley as the result of a storm. 

 Such specimens, only preserved as the result of a fortunate accident, 

 are unusually precious and interesting. 



Alsinites differs in no very marked characters from the modern 

 Alsine^ but it has a facies of its own and by reason of the long ex- 

 serted stamens and absence of corolla may be considered generally 

 distinct. 



Family PROTEACEAE 



LOMATIA OBTUSIUSCULA. new species 



Plate 1, fig. 4 



Similar to L. terminalis Lesquereux, from the Florissant Miocene 

 but the ends of the lobes of the leaf are obtuse instead of acutely 

 pointed. The type is the end of a leaf, 38 mm. long, intense black 

 as preserved. The venation only visible on wetting, the original 

 texture evidently coriaceous. The apical lobe is lanceolate, 18 mm. 

 long and 7 mm. broad, obtuse at tip; there are two lateral lobes 

 on each side, those on one side with the upper margin 5 mm. long, 

 on the other longer, 6 or 7 mm., and all obtuse and directed obliquely 

 apicad. 



Green River Eocene, Roan Mountains, Colorado, at Station 1, 

 near head of Ute trail (Cockerell, 1922). 



Holotype.—Csit. No. 36859, U.S.N.M. 



